Olli Ilmari Rehn (About this sound listen ; born 31 March 1962 in Mikkeli, Finland) is a Finnish politician, who is the Minister of Economic Affairs in Juha Sipilä's cabinet. Previously, he served as European Commissioner for Economic and Monetary Affairs and the Euro of the European Commission from 2009 to 2014 and the European Commissioner for Enlargement from 2004 to 2010. Rehn is a member of the Centre Party of Finland.